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Investments Equity Investments, by Category (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Mutual Fund
Schedule of Equity Investments
Fair Value	$ 152	$ 65,453
Percent of Total	2.00%	56.10%
Public Utility, Equities
Schedule of Equity Investments
Fair Value	$ 0	$ 3,663
Percent of Total	0.00%	3.10%
Common Stock
Schedule of Equity Investments
Fair Value	$ 0	$ 44,492
Percent of Total	0.00%	38.20%
Nonredeemable Preferred Stock
Schedule of Equity Investments
Fair Value	$ 7,293	$ 3,002
Percent of Total	98.00%	2.60%
Equity Securities
Schedule of Equity Investments
Fair Value	$ 7,445	$ 116,610
Percent of Total	100.00%	100.00%

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740

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